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authFullName_s : Keqin Gu

Stability and stabilization of systems with time delay

Rifat Sipahi , Silviu-Iulian Niculescu , Chaouki T Abdallah , Wim Michiels , Keqin Gu
IEEE Control Systems, 2011, 31 (1), pp.38-65. ⟨10.1109/MCS.2010.939135⟩
Journal articles hal-00664367v1

On the Fragility of PI Controllers for Time-Delay SISO Systems

César Fernando Méndez Barrios , Silviu-Iulian Niculescu , Irinel-Constantin Morarescu , Keqin Gu
16th Mediterranean Conference on Control and Automation, Jun 2008, Ajaccio, France
Conference papers hal-02194366v1

Geometric ideas in the stability analysis of delay models in biosciences

Silviu-Iulian Niculescu , Irinel-Constantin Morarescu , Wim Michiels , Keqin Gu
Queinnec, I; Tarbouriech, S; Garcia, G; Niculescu, SI. Biology and Control Theory: Current Challenges, 357, SPRINGER-VERLAG BERLIN, 2007, Lecture Notes in Control and Information Sciences book series (LNCIS), ⟨10.1007/978-3-540-71988-5_10⟩
Book sections istex hal-02194455v1

Stability crossing curves of shifted gamma-distributed delay systems

Irinel-Constantin Morarescu , Silviu-Iulian Niculescu , Keqin Gu
SIAM Journal on Applied Dynamical Systems, 2007, 6 (2), pp.475-493. ⟨10.1137/060670766⟩
Journal articles hal-02271891v1
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Migration of double imaginary characteristic roots under small deviation of two delay parameters

Keqin Gu , Dina Irofti , Islam Boussaada , Silviu-Iulian Niculescu
54th IEEE Conference on Decision and Control (CDC), Dec 2015, Osaka, Japan. ⟨10.1109/cdc.2015.7403229⟩
Conference papers hal-01261215v1

Towards more general stability analysis of systems with delay-dependent coefficients

Keqin Gu , Chi Jin , Islam Boussaada , Silviu-Iulian Niculescu
55th IEEE Conference on Decision and Control (CDC 2016), Dec 2016, Las Vegas, United States. ⟨10.1109/cdc.2016.7798743⟩
Conference papers hal-01658313v1
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Migration of imaginary roots of multiplicity three and four under small deviation of two delays in time-delay systems

Dina Irofti , Keqin Gu , Islam Boussaada , Silviu-Iulian Niculescu
15th European Control Conference (ECC 2016), Jun 2016, Aalborg, Denmark. ⟨10.1109/ecc.2016.7810535⟩
Conference papers hal-01418212v1

Stability Analysis of Systems with Delay-Dependent Coefficients Subject to Some Particular Delay Structure

Chi Jin , Keqin Gu , Silviu-Iulian Niculescu , Islam Boussaada
16th European Control Conference, ECC 2018, Jun 2018, Limassol, Greece. pp.1208-1213, ⟨10.23919/ECC.2018.8550042⟩
Conference papers hal-02281718v1
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Stability Analysis of Systems with Delay-Dependent Coefficients: an Overview

Chi Jin , Keqin Gu , Silviu Iulian Niculescu , Islam Boussaada
IEEE Access, 2018, pp.1. ⟨10.1109/ACCESS.2018.2828871⟩
Journal articles hal-01781318v1

Delay Effects on Output Feedback Control of Dynamical Systems

Silviu-Iulian Niculescu , Wim Michiels , Keqin Gu , Chaouki T Abdallah
Complex Time-Delay Systems, pp.63-84, 2009, ⟨10.1007/978-3-642-02329-3_3⟩
Book sections istex hal-02329731v1
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Stability Analysis of Control Systems subject to Delay-Difference Feedback

Chi Jin , Silviu-Ilian Niculescu , Islam Boussaada , Keqin Gu
IFAC 2017 - 20th World Congress of the International Federation of Automatic Control, Jul 2017, Toulouse, France. pp.13330 - 13335, ⟨10.1016/j.ifacol.2017.08.1894⟩
Conference papers hal-01656727v1

Computing maximum delay deviation allowed to retain stability in systems with two delays

Keqin Gu , Silviu-Iulian Niculescu , Jie Chen
Applications of Time Delay Systems, 352, pp.157-164, 2007, Lecture Notes in Control and Information Sciences book series (LNCIS), ⟨10.1007/978-3-540-49556-7_10⟩
Book sections istex hal-02271893v1
Image document

On the geometry of pi controllers for SISO systems with input delays

Irinel-Constantin Morarescu , Silviu-Iulian Niculescu , Keqin Gu
7th IFAC Workshop on Time Delay Systems TDS 2007, Sep 2007, Nantes, France. pp.129-134, ⟨10.1016/S1474-6670(17)69275-9⟩
Conference papers hal-02293066v1

The geometry of stability crossing curves of PI controllers for SISO systems with I/O delays

Irinel-Constantin Morarescu , Silviu-Iulian Niculescu , Keqin Gu
Revue roumaine de mathématiques pures et appliquées, 2010, 55 (4), pp.297-313
Journal articles hal-00664359v1

Stability crossing boundaries of delay systems modeling immune dynamics in Ieukemia

Silviu-Iulian Niculescu , P.S. Kim , Keqin Gu , P.P. Lee , D. Levy
Discrete and Continuous Dynamical Systems - Series B, 2010, 15 (1), pp.129-156. ⟨10.3934/dcdsb.2009.13.129⟩
Journal articles hal-00557924v1
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Stability Analysis of a More General Class of Systems with Delay-Dependent Coefficients

Chi Jin , Keqin Gu , Islam Boussaada , Silviu-Iulian Niculescu
IEEE Transactions on Automatic Control, 2019, 14, pp.1. ⟨10.1109/TAC.2018.2832459⟩
Journal articles hal-01957472v1
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Some insights into the migration of double imaginary roots under small deviation of two parameters

Dina Irofti , Keqin Gu , Islam Boussaada , Silviu-Iulian Niculescu
Automatica, 2018, 88, pp.91-97. ⟨10.1016/j.automatica.2017.11.015⟩
Journal articles hal-01712829v1
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Stability crossing boundaries and fragility characterization of PID controllers for SISO systems with I/O Delays.

Irinel-Constantin Morarescu , César Fernando Méndez Barrios , Silviu-Iulian Niculescu , Keqin Gu
2011 American Control Conference (ACC), Jun 2011, San Francisco, United States. pp.4988 - 4993, ⟨10.1109/acc.2011.5991530⟩
Conference papers hal-00637998v1
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Stability Analysis of Systems with Delay-Dependant Coefficients a two-Parameter Approach

Chi Jin , Keqin Gu , Islam Boussaada , Silviu-Iulian Niculescu
ACC 2017 - American Control Conference, May 2017, Seattle, WA, United States. ⟨10.23919/acc.2017.7963847⟩
Conference papers hal-02276317v1

An Overview of Stability Analysis of Systems with Delay Dependent Coefficients

Chi Jin , Islam Boussaada , Silviu-Iulian Niculescu , Keqin Gu
21st International Conference on System Theory, Control and Computing (ICSTCC 2017), Oct 2017, Sinaia, Romania. ⟨10.1109/icstcc.2017.8107072⟩
Conference papers hal-01658201v1

On the geometry of stability regions of Smith predictors subject to delay uncertainty

Irinel-Constantin Morarescu , Silviu-Iulian Niculescu , Keqin Gu
IMA Journal of Mathematical Control and Information, 2007, 24 (3), pp.411-423. ⟨10.1093/imamci/dnl032⟩
Journal articles istex hal-02271896v1